which pair of ratios does NOT form a proportion?

A.3/ 5 24/40
B.30/10 15/3
C.9/14 3/4
D.7/12 14/24****

3 answers

No.

Please do the calculations before you post another answer.

Actually two of your answer choices do not form a proportion. Check for a typo.
I need help not corrections on my mf typos
I'll give you an example.

D forms a proportion.

7/12 = 14/24

7 * 2 = 14
12 * 2 = 24